JP2009012010A - Thin plate piece, and structure for welding thin plate piece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin plate piece which prevents from being deformed and is easily welded, and to provide a structure for welding the thin plate pieces which facilitates the welding of two thin plate pieces adjacent to each other. <P>SOLUTION: The thin plate piece comprises a thin plate piece body, and a reinforcing member having a substantially L-shaped section which is fixed to the thin plate piece body so that an L-shaped space part is directed in the direction of an end of the thin plate piece body and along this end in a vicinity of the end. The thin plate piece body has a projection having a hole, and the reinforcing member has a first through hole penetrating the projection in a side part of the reinforcing member. The projection is passed through the through hole, a first fitting member is fitted in the hole of the projection, and the reinforcing member is fixed to the thin plate piece body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a component of a structure such as a liquid fuel (for example, LNG (liquefied natural gas), LPG (liquefied petroleum gas), etc.), a liquid such as water, or a tank that safely stores a gas such as fuel gas. The present invention relates to a thin plate piece welding structure for welding a thin plate piece and two adjacent thin plate pieces.

  The structure such as the tank using the thin plate pieces is formed by joining a plurality of thin plate pieces by welding. That is, a structure such as a tank has a thin plate piece as a constituent element.

  Patent Document 1 describes a welding jig (clogs 39) for adjusting the distance between two thin plate pieces to be welded (groove root distance) (see FIG. 7 of Patent Document 1). Thereby, welding of a thin piece can be facilitated.

JP-A-9-285894

  However, Patent Document 1 describes a welding jig (clogs 39), but does not disclose anything about reinforcing a thin plate piece. The thin plate piece has a disadvantage that it is difficult to weld due to deformation during welding because the thickness of the thin plate piece is small with respect to the area of the front surface or the back surface.

  The present invention has been made in view of the above points, and an object thereof is to provide a thin plate piece that is easy to weld while preventing deformation and a thin plate piece welding structure that facilitates welding of two adjacent thin plate pieces. There is.

  The thin plate piece according to claim 1 has a thin plate piece main body and a substantially L-shaped cross section, with the L-shaped space portion facing the end portion of the thin plate piece main body and in the vicinity of the end portion. And a reinforcing member fixed to the thin plate body.

  The thin plate piece according to claim 2 is the thin plate piece according to claim 1, wherein the thin plate piece main body has a protruding portion having a hole, and the reinforcing member has a first through hole through which the protruding portion is passed. The reinforcing member is provided in a lateral portion of the reinforcing member, and after passing the protruding portion through the through hole, a first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is fixed to the thin plate body. To do.

  The thin plate piece welding structure according to claim 3 is a thin plate piece welding structure for welding two adjacent thin plate pieces, and the two adjacent thin plate pieces and the two adjacent thin plate pieces. Each of the thin plate pieces has a second through hole at a position corresponding to the protrusion, and the first fitting member is fitted into the hole of the protrusion through the second through hole. The two thin plate pieces are fixed to the adjacent two thin plate pieces between the vertical portions of the reinforcing member, and the inner wall surface of the second through hole and the outer surface or inner surface of the protrusion And a welding jig capable of adjusting a distance between the two adjacent thin plate pieces by inserting a second fitting member therebetween.

  The thin plate piece welding structure according to claim 4 is a thin plate piece welding structure for welding two adjacent thin plate pieces, the two adjacent thin plate pieces, the bridging portion, and It has a support part that supports the bridge part, and is arranged on the two adjacent thin plate pieces so as to straddle the reinforcement member that each of the two adjacent thin plate pieces has, and the reinforcing member is disposed on the bottom surface of the bridge part. A welding jig capable of adjusting the distance between the adjacent two thin plate pieces by abutting each other and inserting a third fitting member between the inner surface of the support portion and the outer surface of the reinforcing member It is characterized by having.

  According to the thin plate piece of claim 1, the cross section is substantially L-shaped so that the L-shaped space portion faces the end portion of the thin plate piece main body and along this end portion in the vicinity of the end portion. Further, the thin plate piece is reinforced by the reinforcing member fixed to the thin plate piece main body, and deformation of the thin plate piece can be prevented.

  According to the thin plate piece of claim 2, the reinforcing member is arranged so that the L-shaped space portion faces the end portion of the thin plate piece main body and along the end portion in the vicinity of the end portion. The first fitting member is fitted and fixed firmly through a projection having a hole, so that a work space for welding can be secured above the end portions (grooves) of two adjacent thin plate pieces facing each other. Easy to weld. For this reason, the thin-plate piece which is easy to weld at the same time it prevents a deformation | transformation is obtained.

  The thin plate piece welding structure according to claim 3 has a second through hole at a position corresponding to each of the two adjacent thin plate pieces according to claim 2 and the protruding portion of each of the two adjacent thin plate pieces. Then, by inserting the first fitting member into the hole of the protrusion through the second through hole, the adjacent two thin plate pieces are adjacent to each other between the vertical portions of the reinforcing members. Fixed to two thin plate pieces, and a second fitting member is fitted between the inner wall surface of the second through-hole and the outer surface or inner surface of the protrusion, and the two adjacent thin plate pieces A welding jig capable of adjusting the interval, so that the second fitting member is fitted between the inner wall surface of the through hole of the welding jig and the outer surface or the inner surface of the projection. Can adjust the interval between the two adjacent thin plate pieces. Is easily performed, since alignment of the adjacent sheet pieces easily, can facilitate the welding of the adjacent two thin pieces.

  The thin plate piece welding structure according to claim 4 is a thin plate piece welding structure for welding two adjacent thin plate pieces, the two adjacent thin plate pieces, the bridging portion, and It has a support part that supports the bridge part, and is arranged on the two adjacent thin plate pieces so as to straddle the reinforcement member that each of the two adjacent thin plate pieces has, and the reinforcing member is disposed on the bottom surface of the bridge part. A welding jig that abuts each other and that can adjust a distance between the two adjacent thin plate pieces by fitting a third fitting member between an inner surface of the support portion and an outer surface of the reinforcing member; Therefore, the distance between the two adjacent thin plate pieces can be adjusted by fitting a third fitting member between the inner surface of the support portion and the outer surface of the reinforcing member. Can be easily adjusted, and alignment of adjacent thin plate pieces is easy. Since it in, it is possible to facilitate the welding of the two adjacent sheet piece.

  An example of an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same, corresponding, and generic items will be described with the same reference numerals. In addition, when there are a plurality of similar, corresponding, or generic items in the drawings, only some of them are denoted by reference numerals. In addition, this invention is not limited only to the following embodiment. It goes without saying that the embodiments can be appropriately modified without departing from the gist of the present invention.

  Drawing 1 is an explanatory view explaining the situation at the time of joining a thin piece concerning an example of the present invention by welding in a rock cavity.

  In the present embodiment, a thin plate piece 10 that is a component (that is, a component) of a horizontal cylindrical tank 35 (see a two-dot chain line) provided in a cavity 33 in the rock 31 will be described. The thin plate piece 10 may be a thin plate piece of a structure such as a tank (for example, a storage tank such as a vertical cylindrical tank or a spherical tank, a tank to which external pressure or internal pressure is applied) or a pipe.

  The gantry 25 is formed in the cavity 33 in the rock 31. The thin plate 10 is joined on the gantry 25 by welding to form a cylindrical portion of the horizontal cylindrical tank 35.

  FIG. 2 is a view showing a thin plate piece according to an example of the present invention. FIG. 3 is a schematic cross-sectional view of a state in which thin plate pieces according to an example of the present invention are butted together. As for the reference numerals in FIG. 3, the predetermined reference numerals such as 12 are given generically.

  The thin plate piece 10 includes a thin plate piece main body 11, a reinforcing member 12 (generically referring to 12 a, 12 b, 12 c, and 12 d. The same shall apply hereinafter), a protruding portion 13, and a first fitting member 14. These are formed of metal or the like. The reinforcing member 12, the protrusion 13, the first fitting member 14, and the like are shown on the inner surface side of the thin plate piece body 11 (the inner wall surface side when a cylindrical tank is formed).

  Since the thin plate piece main body 11 exemplifies the component body portion of the horizontal cylindrical tank 35, the thin plate piece main body 11 is rectangular and has a curved surface (curved in FIG. 3 as a flat surface). In particular, when the thin plate body 11 is a cylindrical part, it is curved in the circumferential direction of the cylinder. In addition, when the thin plate piece main body 11 is a spherical shell part, the reinforcing member 12 and the like are also bent in accordance with the shape of the thin plate piece main body 11 so as to be bent along the spherical surface shape.

  The thin plate body 11 is provided with a protrusion 13 detachably along the end 111a (111b, 111c, or 111d) in the vicinity of the outer end 111a (111b, 111c, or 111d). This protrusion 13 has a hole 13a on its side. In the present embodiment, the protrusion 13 is a square piece. By providing the protrusion 13 so as to be detachable, the protrusion 13 can be removed after the thin plate 10 is welded.

  The square piece is a hexagonal rectangular parallelepiped made of steel, and a hole 13a having a required diameter in which the first fitting member 14 can be fitted in the center of the hexagonal rectangular parallelepiped (through a circular cross section here). Corresponding to the cylindrical hole). ). In addition, you may form the hexagonal rectangular parallelepiped external appearance shape of a square piece in a flat plate shape.

  In the present embodiment, the first fitting member 14 is a tapered pin (for example, a substantially conical shape (including a conical shape), but is not limited thereto, and may be a substantially polygonal pyramid shape such as a square arrow), that is, a common name. Consists of borocin. The first fitting member 14 is fitted into (inserted into) the hole 13a.

  The reinforcing member 12 is made of, for example, an angle material. The reinforcing member 12 has a substantially L-shaped cross section (including an L shape) having a horizontal lateral portion 122 and a vertical longitudinal portion 124. The reinforcing member 12 is a generic term for the first through hole 121 (generally referred to as 121a, 121b, 121c, 121d; the same shall apply hereinafter) through which the protruding part 13 is passed and the lateral part 122 (122a, 122b, 122c, 122d). The same shall apply hereinafter). The first through hole 121 is provided at a position corresponding to the protruding portion 13 when the reinforcing member 12 is fixed to the thin plate body 11. And the 1st through-hole 121 becomes a magnitude | size and shape which can let the projection part 13 pass.

After the protrusion 13 is passed through the first through hole 121, the first fitting member 14 is detachably fitted into (inserted into) the hole 13 a of the protrusion 13, and the reinforcing member 12 is attached to the inner surface side of the thin plate body 11. Removably fix to. At this time, the L-shaped space portion 123 (the L-shaped space portion 123 (inside the both wall surfaces of the horizontal portion 122 and the vertical portion 124 of the reinforcing member 12) so that the vertical portion 124 of the reinforcing member 12 is parallel to the thin plate body 11. 123 a, 123 b, 123 c, and 123 d are collectively referred to as the same, and the same is applied to the end portion 111 (111 a, 111 b, 111 c, and 111 d are collectively referred to below). That is, the reinforcing member 12 is fixed to the thin plate piece main body 11 so that the vertical portion 124 is located inside the thin plate piece main body 11. By passing the protrusion 13 through the first through-hole 121 and then detachably fitting the first fitting member 14 into the hole 13a of the protrusion 13 to fix the reinforcing member 12 to the thin plate body 11 detachably. The reinforcing member 12 can be easily attached to and detached from the thin plate piece main body 11. And the reinforcement member 12 can be easily fixed to the thin plate piece main body 11, and the reinforcement member 12 can be easily removed after welding the thin plate piece 10. FIG. The reinforcing member 12 is mainly fixed at the time of welding. When the thin plate piece 10 is transported, the reinforcing member 12 may not be fixed as necessary. The reinforcing member 12 can be attached to and detached from the thin plate piece body 11 as required by making the reinforcing member 12 easily attachable to and detachable from the thin plate piece body 11. Thereby, the handling at the time of conveyance of the thin plate piece 10 becomes easy.
The reinforcing member 12 also serves as a reinforcing material and a frame for preventing buckling and the like when placing concrete outside the tank 35. If the protrusions 13 are further provided in a plurality of rows, the reinforcing member 12 can be further added. If the protrusion 13 is provided on the other thin plate body 11 in accordance with the reinforcing member 12, the reinforcing member 12 can be used on the other thin plate body 11 and the reinforcing member 12 can be reused.

  The reinforcing member 12a is arranged so that the L-shaped space portion 123a faces the end portion 111a of the thin plate piece main body 11 and extends along the end portion 111a in the vicinity of the end portion 111a (the end portion 111a (the thin plate main body 11). And is fixed to the thin plate piece main body 11 so as to be substantially parallel to the one side). The same applies to the reinforcing members 12b, 12c, or 12d. In this case, the space portion 123a becomes the space portion 123b, 123c, or 123d, and the end portion 111a becomes the end portion 111b, 111c, or 111d. Such a reinforcing member 12 makes it possible to prevent deformation (maintenance of shape, maintenance of curvature, etc.) during conveyance of the thin plate piece 10. Moreover, deformation prevention (shape maintenance, curvature maintenance, distortion prevention, etc.) at the time of welding of the thin plate piece 10 becomes possible. Further, the reinforcing member 12, the protruding portion 13 and the like assist in assembly of a tank (structure) such as welding and facilitate alignment, axial alignment, perfect circle maintenance, and the like. Further, since the reinforcing member 12 has a substantially L-shaped cross section, it is easy to hold down.

  Since the L-shaped space 123 is directed in the direction of the end portion 111 of the thin plate piece main body 11, a space is formed above the butting portion (groove) of the thin plate piece 10 (see FIG. 3), so a welding work space is provided. Therefore, the thin plate material 11 can be easily welded.

  The reinforcing member 12a (12b, 12c, or 12d) has a substantially L-shaped cross section, and the L-shaped space portion 123a (123b, 123c, or 123d) is an end portion 111a (111b, 111c, or 111d) of the thin plate body 11. ) And in the vicinity of the end 111a (111b, 111c, or 111d) of the thin plate body 11 so as to be along the end 111a (111b, 111c, or 111d). For the first time, it is possible to obtain a thin piece that is easy to weld while preventing deformation.

  The reinforcing member 12 is provided in the circumferential direction of the curved surface of the thin plate piece main body 11 (see the reinforcing members 12a and 12c) and in the direction perpendicular to the circumferential direction (see the reinforcing members 12b and 12d). Since deformation mainly occurs in the circumferential direction, the reinforcing member 12 may be provided in the circumferential direction of the curved surface of the thin plate piece body 11 (see the reinforcing members 12a and 12c).

  FIG. 4 is a view showing an example of a first thin plate piece welding structure according to the present invention. The reference numerals in FIG. 4 are given generically for predetermined items such as 12. In addition, hatching indicating a cross section is omitted.

  The first thin plate piece welding structure is a thin plate piece welding structure for welding two adjacent thin plate pieces 10. The first thin plate piece welding structure includes the second through holes 401 at positions corresponding to the two adjacent thin plate pieces 10 described above and the two protruding portions 13 respectively included in the two adjacent thin plate pieces 10. The two thin plate pieces 10 which are adjacent to each other by fitting the first fitting member 14 into the hole 13a of the protruding portion 13 through the second through hole 401 have two longitudinal members of the reinforcing member 12 respectively. The second fitting member is fixed to the two thin plate pieces 10 adjacent to each other between the portions 124, and is inserted between the inner wall surface 401 a of the second through hole 401 and the outer surface 13 b or the inner surface 13 c of the protruding portion 13. 20, and a welding jig 40 capable of adjusting the interval between two adjacent thin plate pieces 10 (groove interval).

  The welding jig 40 is formed of a metal plate or the like having a predetermined thickness, and has a predetermined shape, for example, a rectangle as in the present embodiment. The through hole 401 is formed in a rectangular shape, a circular shape, or the like. Since the first fitting member 14 is fitted into the hole 13a of the protrusion 13 (see FIG. 3) through the through hole 401 of the welding jig 40, the inner wall surface 401a of the through hole 401 can be suppressed. The first fitting member 14 is fixed between the vertical portions 124 having a substantially L-shaped cross section of the two reinforcing members 12 of the adjacent thin plate pieces 10.

  When the first fitting member 14 is configured by a taper pin or the like, the welding jig 40 is more firmly fixed by deeply fitting the first fitting member 14 and adjacent to each other during welding. The heights of the thin plate pieces 10 can be easily adjusted. The second fitting member 20 is configured by, for example, a square pyramid shaped square arrow or the like.

  By forming the first thin plate piece welding structure (the thin plate piece 10 and the welding jig 40, etc.) in the above-described structure, the interval between the thin plate pieces 10 can be adjusted. Since it can be performed easily and alignment of adjacent thin plate pieces can be easily performed, welding of two adjacent thin plate pieces can be facilitated. In the first thin plate piece welding structure, the protrusion 13 is effectively used so that welding can be easily performed.

  FIG. 5 is a view showing an example of a second thin plate piece welding structure according to the present invention. The reference numerals in FIG. 5 are given generically for predetermined things such as 12 and the like.

  The second thin plate piece welding structure is a thin plate piece welding structure for welding two adjacent thin plate pieces 10. The second thin plate piece welding structure has two adjacent thin plate pieces 10 described above, a bridging portion 50a, and a support portion 50b that supports the bridging portion 50a, and the two adjacent thin plate pieces 10 each have. It arrange | positions at the two thin plate pieces 10 adjacent so that the upper part of the two reinforcement members 12 may be straddled, and the two reinforcement members 12 of the thin plate piece 10 adjacent to the bottom face 50ab of the bridge | bridging part 50a each contact | abut, and the inner side of the support part 50b The distance between the two adjacent thin plate pieces 10 can be adjusted by fitting the third fitting member 30 between the surface 50bb of the second member and the outer surface 124p of the reinforcing member 12 (the outer surface 124p of the vertical portion 124). A welding jig 50.

  The welding jig 50 is formed in a structure in which the interval between the support portions 50b is longer than the interval between the vertical portions 124 of the two reinforcing members 12. The welding jig 50 is formed of a metal plate having a predetermined thickness and is formed in a predetermined shape.

  In the welding jig 50, the height of the support portion 50b is equal to or lower than the height of the vertical portion 124 of the reinforcing member 12, and the reinforcing members 12 of the two thin plate pieces 10 adjacent to the bottom surface 50ab of the bridging portion 50a are used. Each of the upper surfaces 124c is formed so as to be in contact with each other. Further, by making the heights of the two support portions 50b the same and the heights of the support portions 50b of the reinforcing member 12, the upper surface 124c of the reinforcing member 12 of the thin plate piece 10 adjacent to the bottom surface of the bridging portion 50a is abutted. If they are brought into contact with each other, the heights of the adjacent thin plate pieces 10 can be matched, thereby facilitating welding.

  The 3rd fitting member 30 is comprised, for example by a square arrow etc., and the adjacent thin plate piece 10 approaches as the 3rd fitting member 30 is fitted.

  By forming the second thin plate piece welding structure (the thin plate piece 10 and the welding jig 50, etc.) in the above structure, the interval between the thin plate pieces 10 can be easily adjusted, and the alignment of adjacent thin plate pieces can be adjusted. Therefore, welding of two adjacent thin plate pieces can be facilitated. In the second thin plate piece welding structure, the reinforcing member 12 is effectively used so that welding can be easily performed.

  The welding jig 50 has a convex portion 50c on the substantially central lower surface of the bridging portion 50a. The convex portion 50c is formed by fitting the third fitting member 30 between the surface of the outer side 50cb of the convex portion 50c and the inner surface of the reinforcing member (the inner surface 124q of the vertical portion 124) and adjacent thin plate pieces 10. The interval is formed to be adjustable. Thereby, although not shown, as the third fitting member 30 is fitted, the adjacent thin plate pieces 10 move away.

  In the first and second thin plate piece welding structures shown in FIGS. 4 and 5, the welding jigs 40 and 50 can be easily formed in the above structure, and can be formed of a lightweight material. The welding jigs 40 and 50 and the second fitting member 20 or the third fitting member 30 can be used for positioning, skin alignment, axial alignment, and the like during welding. Further, it becomes easy to maintain a perfect circle of the cylindrical portion during welding and finely adjust the interval between the thin plate pieces 10 (groove route interval). Furthermore, the welding jigs 40 and 50 can prevent deformation (distortion) of the thin plate piece 10 during welding. Moreover, a tank etc. can be constructed | assembled with sufficient workability | operativity by said thin plate piece 10 or the structure for 1st thru | or 2nd thin plate piece welding.

  The thin plate piece and the structure for welding the thin plate piece according to the present invention are not limited to the tank in the bedrock cavity, but welds the thin plate piece that is a constituent element of the tank installed on the ground or underground and the two adjacent thin plate pieces. In addition, it is applicable not only to horizontal cylindrical tanks, but also to tanks of various shapes such as vertical cylindrical tanks and spherical tanks, and structures where external and internal pressures are applied. can do.

It is explanatory drawing explaining the condition at the time of joining the thin-plate piece which concerns on an example of this invention within a rock cavity by welding. It is a figure which shows the thin-plate piece which concerns on an example of this invention. It is a schematic sectional drawing of the state which matched the thin plate piece which concerns on an example of this invention. It is a figure which shows an example of the structure for the 1st thin plate piece welding which concerns on this invention. It is a figure which shows an example of the structure for the 2nd thin plate piece welding which concerns on this invention.

Explanation of symbols

10 Thin plate
11 Thin plate body
12 Reinforcing member
13 Protrusion
13a hole
13b outer surface
13c inner surface
14 First fitting member
20 Second fitting member
30 Third fitting member
40 Welding jig
50 Welding jig
50a Cross-linking part
50b Support part
50ab bottom
50bb inner surface
121 First through hole
122 Horizontal
123 Space
124 Vertical
124p outer surface
124q inner surface
401 Second through hole
401a inner wall surface

Claims (4)

  The thin plate piece main body has a substantially L-shaped cross section and the thin plate piece main body has an L-shaped space facing the end portion of the thin plate piece main body and along the end portion in the vicinity of the end portion. A thin plate piece having a fixed reinforcing member.   2. The thin plate piece according to claim 1, wherein the thin plate piece main body has a protruding portion having a hole, and the reinforcing member has a first through hole through which the protruding portion passes, on a lateral portion of the reinforcing member, A thin plate piece, wherein a first fitting member is fitted into the hole of the protruding portion after passing the protruding portion through the through hole, and the reinforcing member is fixed to the thin plate piece main body.   A thin plate piece welding structure for welding two adjacent thin plate pieces, wherein the two thin plate pieces are adjacent to each other and positions corresponding to the projections respectively included in the two adjacent thin plate pieces Of the reinforcing member which each of the two adjacent thin plate pieces has by fitting the first fitting member into the hole of the protrusion through the second through hole. A second fitting member is fitted between the inner wall surface of the second through hole and the outer surface or the inner surface of the projection portion between the vertical thin portions and fixed to the two adjacent thin plate pieces. And a welding jig capable of adjusting a distance between the two adjacent thin plate pieces. A thin plate piece welding structure for welding two adjacent thin plate pieces, comprising two adjacent thin plate pieces according to claim 1 or 2, a bridging portion and a support portion for supporting the bridging portion, The two adjacent thin plate pieces are arranged on the two adjacent thin plate pieces so as to straddle the reinforcing members, respectively, the reinforcing members abut on the bottom surface of the bridge portion, and the inner surface of the support portion, And a welding jig capable of adjusting a distance between the two adjacent thin plate pieces by inserting a third fitting member between the outer surface of the reinforcing member and the thin plate piece welding. Structure.